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I just downloaded the latest Firenzina files from your site but the 64bit version still does not work but with a message "is not a valid win32 application".

Which GUI has this problem? I will look into it.

Yuri,

I am using Arena 3.0 for my chess tournaments since the beginning.

Yesterday, I reluctantly installed the Windows 7 in my AMD Quad Core computer just to test my theory that your x64 compilations are not intended for Windows XP but for computers that are high end. And when the installation was finished, my theory was true! The two 64 bit compilations without the Intel13 tag all executed but those with SSE4 and Intel13 labels did not run.

I even tested your 64 bit generic version against my compilation, and it murdered mine. But I will not use your version in my tournaments because it is doped and unfair for the other engines, otherwise, it will be near the strength of Houdini. My tournaments are all about the native strength of the chess engines, not a tournament for compilers nor operating systems.

I just downloaded the latest Firenzina files from your site but the 64bit version still does not work but with a message "is not a valid win32 application".

Which GUI has this problem? I will look into it.

Yuri,

I am using Arena 3.0 for my chess tournaments since the beginning.

Yesterday, I reluctantly installed the Windows 7 in my AMD Quad Core computer just to test my theory that your x64 compilations are not intended for Windows XP but for computers that are high end. And when the installation was finished, my theory was true! The two 64 bit compilations without the Intel13 tag all executed but those with SSE4 and Intel13 labels did not run.

I even tested your 64 bit generic version against my compilation, and it murdered mine. But I will not use your version in my tournaments because it is doped and unfair for the other engines, otherwise, it will be near the strength of Houdini. My tournaments are all about the native strength of the chess engines, not a tournament for compilers nor operating systems.

I wonder if you ever tried to run your compilations in Windows XP.

Have a nice day!

drj

Dear drj,

I am primarily using the same version of Arena. (I tested with scid and ChessGUI a little bit, too.) What you wrote above mostly makes sense to me. Only I don't know how you could tell if the other engines are not "doped", with the notable exception of open-source ones that you can compile from source the same way. For each given platform/configuration, I'd be most interested in performance of the strongest compile available that runs on it, for that's what the user would naturally prefer, I suppose. Yes, I know that not all compiles provided at the Firenzina page run under XP: One of the computers that I have used for my testing still runs XP. Needless to say (but I'll say it), you are most welcome to continue using your own Firenzina compile, that's the beauty of open source. Thank you very much for compiling and testing the engine!